| 年份 | 类型 | 数值(百万美元) |
| 2001 | United States : all sectors | 247,343.00 |
| 2002 | United States : all sectors | 249,411.00 |
| 2003 | United States : all sectors | 259,767.00 |
| 2004 | United States : all sectors | 270,119.00 |
| 2005 | United States : all sectors | 298,003.00 |
| 2006 | United States : all sectors | 326,506.00 |
| 2007 | United States : all sectors | 343,703.00 |
| 2008 | United States : all sectors | 363,583.00 |
| 2009 | United States : all sectors | 353,289.00 |
| 2010 | United States : all sectors | 368,918.00 |
| 2011 | United States : all sectors | 371,049.00 |
| 2012 | United States : all sectors | 363,687.00 |
| 2013 | United States : all sectors | 375,058.00 |
| 2014 | United States : all sectors | 393,096.00 |
| 2015 | United States : all sectors | 391,341.00 |
| 2016 | United States : all sectors | 386,509.00 |
| 2017 | United States : all sectors | 388,089.00 |